<template>
    <div>
        <!-- 面包屑导航 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图区域 -->
        <el-card>
            <!-- 搜素与添加 -->
            <el-row :gutter="20">
                <el-col :span="7">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible=true">
                        添加用户
                    </el-button>
                </el-col>
            </el-row>

            <!-- 用户列表区域 -->
            <el-table :data="userlist" border stripe>
                <el-table-column label="#"  type="index"></el-table-column>
                <el-table-column label="姓名" prop="username"></el-table-column>
                <el-table-column label="邮箱" prop="email"></el-table-column>
                <el-table-column label="电话" prop="mobile"></el-table-column>
                <el-table-column label="角色" prop="role_name"></el-table-column>
                <!-- 其中的porp属性“mg_state”已经被el-switch中的 v-model替代，已经被覆盖了 -->
                <el-table-column label="状态" prop="mg_state">
                    <template slot-scope="scope">
                        <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                        </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="180px">
                    <template slot-scope="scope">
                        <!-- 修改按钮 -->
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                        <!-- 删除按钮 -->
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                        <!-- 分配角色按钮 -->
                         <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                            <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                        </el-tooltip>
                        
                    </template>
                </el-table-column>
            </el-table>

             <!-- 分页区域 -->
            <el-pagination 
            @size-change="handleSizeChange" 
            @current-change="handleCurrentChange" 
            :current-page="queryInfo.pagenum" 
            :page-sizes="[1, 2, 5, 10]" 
            :page-size="queryInfo.pagesize" 
            layout="total, sizes, prev, pager, next, jumper" 
            :total="total">
            </el-pagination>
    
        </el-card>

        <!-- 添加用户对话框 -->
        <el-dialog
          title="添加用户"
          :visible.sync="addDialogVisible"
          width="30%"
          @close="addDialogClosed"
          >
          <!-- 内容主题区 -->
          <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
            <el-form-item label="用户名" prop="username">
              <el-input v-model="addForm.username"></el-input>
            </el-form-item>
            <el-form-item label="密码" prop="password">
              <el-input v-model="addForm.password"></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
              <el-input v-model="addForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
              <el-input v-model="addForm.mobile"></el-input>
            </el-form-item>
          </el-form>
          <!-- 底部区域 -->
          <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addUser">确 定</el-button>
          </span>
        </el-dialog>

        <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>

  </div>
</template>

    

<script>
export default {
    data(){
        
        //验证邮箱规则
        var checkEmail = (rule,value,cb) => {
             // 验证邮箱的正则表达式
            const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

            if (regEmail.test(value)) {
            // 合法的邮箱
             return cb()
            }

            cb(new Error('请输入合法的邮箱'))
        }

        // 验证手机号的规则
        var checkMobile = (rule, value, cb) => {
            // 验证手机号的正则表达式
            const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

            if (regMobile.test(value)) {
                return cb()
            }

            cb(new Error('请输入合法的手机号'))
        }


    
        
        return{
            //获取用户列表的参数对象
            queryInfo :{
                query: '',
                //当前页数
                pagenum: 1,
                //当前每页显示多少条数据
                pagesize: 2
            },
            userlist: [],
            //总页数
            total: 0,
            //控制添加用户对话框的显示与隐藏
            addDialogVisible:false,
            //添加用户数据表单
            addForm: {
                username:'',
                password:'',
                email:'',
                mobile:''
            },
            //添加表单的验证规则对象
            addFormRules : {
                username: [
                    {required: true,message:'请输入用户名',trigger:'blur'},
                    { min: 3, max: 10, message: '用户名长度在 3 到 5 个字符', trigger: 'blur' } 
                ],
                password: [
                    {required: true,message:'请输入密码',trigger:'blur'},
                    { min: 6, max: 15, message: '密码长度在 6 到 15 个字符', trigger: 'blur' } 
                ],
                email: [
                    {required: true,message:'请输入邮箱',trigger:'blur'},
                    {validator: checkEmail ,trigger:'blur'}
                ],
                mobile: [
                    {required: true,message:'请输入手机号',trigger:'blur'},
                    {validator: checkMobile ,trigger:'blur'}
                ]
            },
            //控制修改用户对话框的显示与隐藏
            editDialogVisible: false,
            //查询到的用户信息对象
            editForm: {},
            // 修改表单的验证规则对象
            editFormRules: {
              email: [
                { required: true, message: '请输入用户邮箱', trigger: 'blur' },
                { validator: checkEmail, trigger: 'blur' }
              ],
              mobile: [
                { required: true, message: '请输入用户手机', trigger: 'blur' },
                { validator: checkMobile, trigger: 'blur' }
              ]
            },
            // 控制分配角色对话框的显示与隐藏
            setRoleDialogVisible: false,
            // 需要被分配角色的用户信息
            userInfo: {},
            // 所有角色的数据列表
            rolesList: [],
            // 已选中的角色Id值
            selectedRoleId: ''
    
            
        }
    },
    created(){
        this.getUserList()
    },
    methods: {
        async getUserList(){
           const {data: res} =await this.$http.get('users',{params:this.queryInfo})
           if (res.meta.status !==200) {
               return this.$message.error('获取用户列表失败了！');
           }
           this.userlist = res.data.users
           this.total = res.data.total
           console.log(res);
        },
        //监听 pagesize 改变事件
        handleSizeChange(newSize) {
            // console.log(newSize);
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        //监听 页码值 改变事件
        handleCurrentChange(newPage) {
            // console.log(newPage);
            this.queryInfo.pagenum = newPage
            this.getUserList()
        },
        //监听 Switch 开关的状态变化
        async userStateChanged(userinfo) {
            // console.log(userinfo)
            const {data:res} =await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
            if(res.meta.status !==200) {
                userinfo.mg_state = !userinfo.mg_state
                return this.$message.error('更新用户状态失败了！')
            }
            this.$message.success('跟新用户状态成功！')
        },
            //监听添加用户对话框的关闭事件
            addDialogClosed() {
                this.$refs.addFormRef.resetFields()
            },

            //点击按钮，添加新用户
            addUser() {
                this.$refs.addFormRef.validate(async valid => {
                if (!valid) return
                // 可以发起添加用户的网络请求
                const { data: res } = await this.$http.post('users', this.addForm)

                if (res.meta.status !== 201) {
                this.$message.error('添加用户失败！')
                }

                this.$message.success('添加用户成功！')
                // 隐藏添加用户的对话框
                this.addDialogVisible = false
                // 重新获取用户列表数据
                this.getUserList()
          })
        },

        // 展示编辑用户的对话框
            async showEditDialog(id) {
              // console.log(id)
              const { data: res } = await this.$http.get('users/' + id)
        
              if (res.meta.status !== 200) {
                return this.$message.error('查询用户信息失败！')
              }
        
              this.editForm = res.data
              this.editDialogVisible = true
            },
            // 监听修改用户对话框的关闭事件
            editDialogClosed() {
              this.$refs.editFormRef.resetFields()
            },
            // 修改用户信息并提交
            editUserInfo() {
              this.$refs.editFormRef.validate(async valid => {
                if (!valid) return
                // 发起修改用户信息的数据请求
                const { data: res } = await this.$http.put(
                  'users/' + this.editForm.id,
                  {
                    email: this.editForm.email,
                    mobile: this.editForm.mobile
                  }
                )
        
                if (res.meta.status !== 200) {
                  return this.$message.error('更新用户信息失败！')
                }
        
                // 关闭对话框
                this.editDialogVisible = false
                // 刷新数据列表
                this.getUserList()
                // 提示修改成功
                this.$message.success('更新用户信息成功！')
              })
            },
            // 根据Id删除对应的用户信息
            async removeUserById(id) {
              // 弹框询问用户是否删除数据
              const confirmResult = await this.$confirm(
                '您是否要永久删除该用户, 是否继续?',
                '提示',
                {
                  confirmButtonText: '确定',
                  cancelButtonText: '取消',
                  type: 'warning'
                }
              ).catch(err => err)
        
              // 如果用户确认删除，则返回值为字符串 confirm
              // 如果用户取消了删除，则返回值为字符串 cancel
              // console.log(confirmResult)
              if (confirmResult !== 'confirm') {
                return this.$message.info('已取消删除了哦')
              }
        
              const { data: res } = await this.$http.delete('users/' + id)
        
              if (res.meta.status !== 200) {
                return this.$message.error('删除用户失败！')
              }
        
              this.$message.success('删除用户成功！')
              this.getUserList()
            },
            // 展示分配角色的对话框
            async setRole(userInfo) {
              this.userInfo = userInfo
        
              // 在展示对话框之前，获取所有角色的列表
              const { data: res } = await this.$http.get('roles')
              if (res.meta.status !== 200) {
                return this.$message.error('获取角色列表失败！')
              }
        
              this.rolesList = res.data
        
              this.setRoleDialogVisible = true
            },
            // 点击按钮，分配角色
            async saveRoleInfo() {
              if (!this.selectedRoleId) {
                return this.$message.error('请选择要分配的角色！')
              }
        
              const { data: res } = await this.$http.put(
                `users/${this.userInfo.id}/role`,
                {
                  rid: this.selectedRoleId
                }
              )
        
              if (res.meta.status !== 200) {
                return this.$message.error('更新角色失败！')
              }
        
              this.$message.success('更新角色成功！')
              this.getUserList()
              this.setRoleDialogVisible = false
            },
            // 监听分配角色对话框的关闭事件
            setRoleDialogClosed() {
              this.selectedRoleId = ''
              this.userInfo = {}
            }
  }
}
</script>

<style lang="less" scoped>

</style>